Version 0.13

Removed support for Play 2.3 and Scala 2.10
Added ActionBuilder for Actions that execute the blocks in a context
with a Span set.

0.11 Release

Fix github deploy key

0.9

Adjust tagging

0.8

Dedup HTT_URL info

0.7

Oracle JDK 8 in Travis

0.6

Fix span management

0.5: Do not set port, as opentracing treats it as a short.

Java Shorts are signed, thus they can only contain half of all available
ports. Entirely possible I'm missing something, but it seems like any port
above 32767 causes an error. I will open an issue with the opentracing
folks to discuss.

0.4

Fix globaltracer version

0.3

Add IP addresses and other improvements

0.2

Ignore errors when extracting spans from headers